Network Remote Access Troubles?

[097]

I wanted to use the remote desktop feature on my windows 8 laptop & sync up to my other PC's throughout the house. When I do, they fail & it took a bit of effort to find out that I have two NAT's & that's the problem according to the troubleshooter. To be clear, I have no flippin' clue what a NAT is. I've got an intel i7 dell laptop running win8 & an i5 running win7 dell desktop also a piece of crap acer on win7 as well, two kindles, two ps3's, and one Bluetooth phone, plus whatever my friends have on my guest network. I have dsl service, but no gateway, I have an ADSL+2 modem & a router that broadcasts 2.4 & 5hz (I think) on two separate networks (home & guest). If any of this just pops out & says 'hey there's ya problem right there"......by all means, do tell.